ERA+
Roberto Hernández · Season-by-season history
ERA+ over time
- Chicago White Sox · MLB
- Tampa Bay Rays · MLB
- Kansas City Royals · MLB
- Cleveland Guardians · MLB
- Houston Astros · MLB
| Season | Team | League | ERA+ |
|---|---|---|---|
| 2015 |  Houston Astros |
MLB | 90 |
| 2013 |  Tampa Bay Rays |
MLB | 79 |
| 2012 |  Cleveland Guardians |
MLB | 53 |
| 2011 | Cleveland Guardians |
MLB | 75 |
| 2010 | Cleveland Guardians |
MLB | 105 |
| 2009 | Cleveland Guardians |
MLB | 67 |
| 2008 | Cleveland Guardians |
MLB | 78 |
| 2007 | Cleveland Guardians |
MLB | 148 |
| 2006 | Cleveland Guardians |
MLB | 83 |
| 2002 |  Kansas City Royals |
MLB | 115 |
| 2001 | Kansas City Royals |
MLB | 117 |
| 2000 | Tampa Bay Rays |
MLB | 155 |
| 1999 | Tampa Bay Rays |
MLB | 161 |
| 1998 | Tampa Bay Rays |
MLB | 118 |
| 1997 |  Chicago White Sox |
MLB | 181 |
| 1996 | Chicago White Sox |
MLB | 249 |
| 1995 | Chicago White Sox |
MLB | 115 |
| 1994 | Chicago White Sox |
MLB | 96 |
| 1993 | Chicago White Sox |
MLB | 185 |
| 1992 | Chicago White Sox |
MLB | 236 |
| 1991 | Chicago White Sox |
MLB | 52 |